A small service for providing resized images based on query string.
If you link to an image normally, that's the image that's served, but if you add a
parameter, then this script will serve a resized version where
X is the maximum size (width or
height) of the new image.
The resized image is cached to allow for speedier subsequent loading, but will be re-generated if the original image has been modified since the cached image was created, so the images are never out of sync.
The PHP script required the PHP GD Graphics Library.